I measured the size of the variables.
This is the revised code for the master:
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11);//rx tx
const byte numCharsSlave = 500;
char receivedSlaveChars[numCharsSlave];
char tempSlaveChars[numCharsSlave]; // temporary array for use when parsing
// variables to hold the parsed data
char messageFromSlave[numCharsSlave] = {0};
// Data received from sensor system
int sensor_rain = 0;
float sensor_light = 0.00;
float sensor_hum = 0.00;
float sensor_temp = 0.00;
// Data received from the Internet
float API_rain = 0.00;
float API_temp = 0.00;
float API_tempFeels = 0.00;
int API_hum = 0;
char API_wind[55] = "";
char API_weather[30] = "";
char API_text_tomorrow[150] = "";
char API_text_tomorrow_night[150] = "";
boolean newData = false; // invert this on Slave arduino
static boolean recvInProgress = false;
static byte ndx = 0;
char startMarker = '<';
char endMarker = '>';
char rc;
unsigned long currentMillis1 = 0;
unsigned long previousMillis1 = 0;
long interval1 = 150; // 150 milliseconds
void setup() {
Serial.begin(9600);
mySerial.begin(9600);
}
void loop() {
recvWithStartEndMarkers();
if (newData == true) {
strcpy(tempSlaveChars, receivedSlaveChars);// this temporary copy is necessary to protect the original data because strtok() used in parseData() replaces the commas with \0
parseData();
showParsedData();
newData = false;
}
}
void recvWithStartEndMarkers() {
while (mySerial.available() > 0 && newData == false) {
rc = mySerial.read();
if (recvInProgress == true) {
if (rc != endMarker) {
receivedSlaveChars[ndx] = rc;
ndx++;
if (ndx >= numCharsSlave) {
ndx = numCharsSlave - 1;
}
}
else {
receivedSlaveChars[ndx] = '\0'; // terminate the string
recvInProgress = false;
ndx = 0;
newData = true;
}
}
else if (rc == startMarker) {
recvInProgress = true;
}
}
}
void parseData() { // split the data into its parts
char * strtokIndx; // this is used by strtok() as an index
strtokIndx = strtok(tempSlaveChars, "*"); // get the first part - the string
strtokIndx = strtok(NULL, "*");
sensor_rain = atoi(strtokIndx);
strtokIndx = strtok(NULL, "*");
sensor_light = atof(strtokIndx);
strtokIndx = strtok(NULL, "*");
sensor_hum = atof(strtokIndx);
strtokIndx = strtok(NULL, "*");
sensor_temp = atof(strtokIndx);
strtokIndx = strtok(NULL, "*");
API_rain = atof(strtokIndx);
strtokIndx = strtok(NULL, "*");
API_temp = atof(strtokIndx);
strtokIndx = strtok(NULL, "*");
API_tempFeels = atof(strtokIndx);
strtokIndx = strtok(NULL, "*");
API_hum = atoi(strtokIndx);
strtokIndx = strtok(NULL, "*");
strcpy(API_wind, strtokIndx);
strtokIndx = strtok(NULL, "*");
strcpy(API_weather, strtokIndx);
strtokIndx = strtok(NULL, "*");
strcpy(API_text_tomorrow, strtokIndx);
strtokIndx = strtok(NULL, "*");
strcpy(API_text_tomorrow_night, strtokIndx);
}
void showParsedData() {
Serial.print("Rain sensor: ");
Serial.println(sensor_rain);
Serial.print("Sensor light: ");
Serial.println(sensor_light);
Serial.print("Sensor humidity: ");
Serial.println(sensor_hum);
Serial.print("Sensor temperature: ");
Serial.println(sensor_temp);
Serial.print("API rain: ");
Serial.println(API_rain);
Serial.print("API temperature: ");
Serial.println(API_temp);
Serial.print("API temperature feels: ");
Serial.println(API_tempFeels);
Serial.print("API humidity: ");
Serial.println(API_hum);
Serial.print("API wind: ");
Serial.println(API_wind);
Serial.print("API weather: ");
Serial.println(API_weather);
Serial.print("API Text tomorrow: ");
Serial.println(API_text_tomorrow);
Serial.print("API Text tomorrow night: ");
Serial.println(API_text_tomorrow_night);
}
Code for the slave:
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11);//rx tx
// Data received from sensor system
int sensor_rain = 1;
float sensor_light = 2.22;
float sensor_hum = 3.33;
float sensor_temp = 4.44;
// Data received from the Internet
float API_rain = 5.55;
float API_temp = 6.66;
float API_tempFeels = 7.77;
int API_hum = 8;
char API_wind[55] = "123456789012345678901234567890123456789012345678901234";
char API_weather[30] = "12345678901234567890123456789";
char API_text_tomorrow[150] = "1234567890123456789012345678901234567890123456789012341234567890123456789012345678901234567890123456789012341234567890123456789012345678901234567890";
char API_text_tomorrow_night[150] = "1234567890123456789012345678901234567890123456789012341234567890123456789012345678901234567890123456789012341234567890123456789012345678901234567890";
void setup() {
Serial.begin(9600);
mySerial.begin(9600);
int sum;
sum = sizeof(sensor_rain) + sizeof(sensor_light) + sizeof(sensor_hum) + sizeof(sensor_temp) + sizeof(API_rain) + sizeof(API_temp) + sizeof(API_tempFeels) + sizeof(API_hum) + sizeof(API_wind) + sizeof(API_weather) + sizeof(API_text_tomorrow) + sizeof(API_text_tomorrow_night);
Serial.println(sum);
Serial.println(sizeof(API_text_tomorrow) + sizeof(API_text_tomorrow_night));
}
void loop() {
sendDataToMaster ();
delay(15000);
}
void sendDataToMaster () {
mySerial.print('<');
mySerial.print("Slave text");
mySerial.print("*");
mySerial.print(sensor_rain);
mySerial.print("*");
mySerial.print(sensor_light);
mySerial.print("*");
mySerial.print(sensor_hum);
mySerial.print("*");
mySerial.print(sensor_temp);
mySerial.print("*");
mySerial.print(API_rain);
mySerial.print("*");
mySerial.print(API_temp);
mySerial.print("*");
mySerial.print(API_tempFeels);
mySerial.print("*");
mySerial.print(API_hum);
mySerial.print("*");
mySerial.print(API_wind);
mySerial.print("*");
mySerial.print(API_weather);
mySerial.print("*");
mySerial.print(API_text_tomorrow);
mySerial.print("*");
mySerial.print(API_text_tomorrow_night);
mySerial.print(">");
}
This is the output for the revised codes:
Rain sensor: 1
Sensor light: 2.22
Sensor humidity: 3.33
Sensor temperature: 4.44
API rain: 5.55
API temperature: 6.66
API temperature feels: 7.77
API humidity: 8
API wind: 123456789012345678901234567890123456789012345678901234
API weather: 12345678901234567890123456789
API Text tomorrow: 12345678901234567890123456789012345678901234567890123412345678901234567890123456789012345678901234567890123412345
API Text tomorrow night:
I need all these data to be transmitted.
They all will be changing by time. The rest of the code is not included because it would only make the code longer.
Any idea why I am not getting all of the data when using 500 for numCharsSlave?